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The number of electrons involved in the ...

The number of electrons involved in the reduction of nitrate `(NO_(3)^(ө))` to hydrazine `(N_(2)H_(4))` is

A

`8`

B

`7`

C

`3`

D

`5`

Text Solution

Verified by Experts

The correct Answer is:
B
`14e^(-)+2NO_(3)^(ө)rarrN_(2)H_(4)`
`2x-12=-2, 2x+4=0`
`2x=10`, 2x=-4`
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CENGAGE CHEMISTRY-REDOX REACTIONS-Ex 2.2
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  2. What is the oxidation stae of Cl in (a) CrO(2)Cl(2) , (b) HClO(4) ...

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  3. Balance the following half-reactions in acidic medium: (a) IO(3)^(Ө)...

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  4. Write balanced redox reactions for each of the following reactions: ...

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  5. Balance the following chemical reactions (by ion electron method) (a...

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  6. Write balanced ionoic half equation (oxidation and reduction) for each...

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  7. Balance the following half reactions in basis medium: (a) CrO(4)^(2-...

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  8. Write balanced net ionic equations for the following reactions in basi...

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  9. Balanced the following equations: (a) H(2)O(2)+H^(o+)+Fe^(2+)rarr H(...

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  10. For the redox reaction: Cr(2)O(7)^(2-)+H^(o+)+NirarrCr^(3+)+Ni^(2)+H...

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  11. SO(2) under atomspheric condition changes to SO(x)^(2-). If oxidation ...

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  12. Which of the following can act as an oxidising agent as well as a redu...

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  13. Sulphur has highest oxidation state in

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  14. The number of electrons involved in the reduction of nitrate (NO(3)^(ө...

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  15. Oxidation number of P in Ba(H(2)PO(2))(2) is

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  16. Which of the following is a disproportional reactions ?

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  17. In balancing the half reaction CN^(ө)rarrCNO^(ө)(skeltan) The numb...

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  18. Which of the following changes requires a reducing agent ?

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